Valve spring compressor



Nov. 14, 1967 T. A. KRYK 3,352,002

VALVE SPRING COMPRESSOR Filed Dec. 7}, 1965 IN VEN TOR Theodore A. K1y[ United States Patent M 3,352,002 VALVE SPRING COMPRESSOR Theodore A. Kryk, 1018 Kayton Ave., San Antonio, Tex. 78210 Filed Dec. 7, 1965, Ser. No. 512,611 1 Claim. (Cl. 29--217) ABSTRACT OF THE DISCLOSURE A tool for compressing a valve spring when desiring to replace broken valve springs and valve stem seals, the tool comprising a Z-shaped frame which is secured by a bolt to an opening which normally receives the rocker arm assembly, the Z-shaped frame supporting a vertically extending stud having an acentrically mounted circular plate at the lower end, the plate having a central opening so as to clear a valve stem while the tool bears downwardly against the valve spring.

This invention relates to tools, and more particularly to improved valve tool.

It is therefore the main purpose of this invention to provide a valve spring compressor which will be used in replacing broken valve springs and valve stem seals without the removal of the cylinder head from the engine.

Another object of this invention is to provide a valve spring compressor which will eliminate the former necessity of using a small bar to compress the valve spring which inevitably slipped and caused mechanic to lose the valve keepers, not to mention that the mechanic often skinned his knuckles in executing the operation.

Still another object of this invention is to provide a valve spring compressor which when used will eliminate hours of time on each job concerning the replacement of broken valve springs and valve stem seals.

Other objects and advantages of this invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claim.

In the drawing:

The drawing is the sole view of this invention.

According to this invention, valve spring compressor tool is provided with a Z-shaped frame 11 which is held in position by means of a bolt 12 which is threadingly received in the openings (not shown) that previously secured the rocker arm. The bolt or bolts 12 secure the base leg 13 of frame 11 to the engine. A threaded stud Patented Nov. 14, 1967 14 is received by frame 11 and is provided with a pair of hexagonal nuts 15 and 15a. The lower extremity of stud 14 is welded to one side of flat circular plate 16 which is provided with an opening 17 in its center in order to freely receive the upper extremity of valve stem 18.

By removing the rocker arm assembly, tool 10 is then bolted to the same openings that held rocker arm. Bolt 12 may be loosened somewhat in order to remove two springs 19 from one setting. The first step of the operation requires removing the sparkplug from the cylinder involved in order to change the valve stem seal 20. A air hose 21 and its associated fitting 22 are inserted into the sparkplug opening after bringing the piston of the cylinder to top dead center. The air and the pressure from air hose 21 holds the valve upwards in the cylinder. A nut 15 upon stud 14 of tool 10 is located downwards to compress valve spring 19 to any height desired. In order to remove the valve keepers 23 nut 15 is located in the opposite direction thus releasing valve spring 19 for removal of valve stem 18 on a seal 20 or spring 19. The circular plate 16 welded to the lower extremity of stud 14 is provided with opening 17 for removing the keepers 23 after spring 19 is compressed.

What I now claim is:

A valve spring compressor, comprising in combination, a Z-configurated frame, said frame having parallel spaced apart legs which are interconnected at their one ends by an angularly extending intermediate leg, one of said legs having a flap for receiving a bolt which is threaded into an opening which normally receives a rocker arm assembly, the opposite of said parallel legs having an opening therethrough, a vertically extending stud extending through said opening, a nut being threadingly engaged upon opposite sides of said leg to said stud, the lower end of said stud having a circular plate secured thereto by a weld, said circular plate being in acentric position relative to said stud, said circular plate having a central opening therethrough so to allow a valve stem to pass therethrough, said stud thereby not interfering with said valve stem, and the lower side of said circular plate normally bearing downwardly to compress a valve spring.

References Cited UNITED STATES PATENTS 1,168,145 1/1916 Baker 29--217 1,586,410 5/1926 Cook 29-217 1,659,523 2/1928 Farrell et a1. 29217 3,225,427 12/1965 Hewett 29-217 OTHELL M. SIMPSON, Primary Examiner T. PETERS, Assistant Examiner, 

